Separates the high quality analog stereo audio and digital S/PDIF (Toslink) audio from the incoming HDMI signal or embeds external stereo analog audio or digital S/PDIF (Toslink) audio to the outgoing HDMI signal without losing any active audio channels Extracts high quality Stereo Analog audio and Digital Toslink S/PDIF audio from the incoming HDMI signal without losing any active audio channe